Experience unparalleled performance and durability with our enhanced GMC/Chevrolet truck exhaust manifolds, specifically designed for LS engines. Our BD-upgraded manifolds address common exhaust manifold bolt failures by incorporating extended fasteners and spacers that effectively withstand thermal expansion. In addition, we've engineered adjusted mounting locations for the heat shield. Crafted with precision, our BD Manifolds boast a robust, thicker design. They are constructed from high-silicon ductile iron to combat warping, ensuring your vehicle remains at peak performance for the long haul.. Uniform increased wall thickness throughout the entire manifold reduces stress risers and helps prevent cracking. Manifolds also available as right only (Passenger Side) PN:1041401 and left only (Driver's Side) PN:1041402. Exhaust Manifold Kit; Replacement; Incl. New Longer Bolts/Spacers/Gaskets; High Silicon Ductile Iron;. Utilizes longer bolts and added spacers to reduce stress on fasteners [15mm Longer]. Utilizes longer bolts and added spacers to reduce stress on fasteners (15mm Longer). BD Diesel Exhaust Manifold Kit - 02-13 Chevy Silverado 1500 & GMC Sierra 1500 V8. EXHAUST MANIFOLD KIT CHEVY SILVERADO 1500 & GMC SIERRA 1500 V8 2002-2013. Machined bolt mating surfaces for secure bolted joint. Designed to fit 2002-2013 GM LS based truck engines. Kit includes all new bolts, spacers, and gaskets. Kit includes all new bolts/spacers/and gaskets. SEMA Certification No. SC-BDD01-0136. Made with high-silicon ductile iron. EXHAUST MANIFOLD KIT CHEVY/GMC V8. Heat Shield Mounting Bosses. Exhaust Manifold Kit. EXHAUST MANIFOLD. OEM replacement

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